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SWAP Requirements for SAP in Linux

Sorry for the questions asking below though it is simple i want to know exact .
We are facing a problem for creation of swap in internal disk as we didn't have sufficient space in Hard disk.
1.Can we create Swap in SAN and we can mount to system? Is it possible for SAP Why?
2.How much min swap space required for 16GB RAM? if answer is 20GB why?
3.i checked with note:1597355 but os team not accepting the basic requirements
4.Conform whether we want to purchase new harddisk or we can use SAN Space for SWAP?

As far as I remember you can create swap on SAN, but do not forget to create it on local disk also, otherwise its not sure what will happen if you do not have SAN connectivity on next reboot
For SAP (depends of what you have also on that server) you should put twice RAM as swap

1)You can not mount swap(it is not real filesystem) and you can use file
name (i.e. /dev/..)
2)you can add swap with "swap" or "swapon" commands....
3) you don't need to create a very large swap file(normally 4 GIG is enough)
if you have not enough memory and many processes inside in swap space
your system will be very slow....

This is by requirements, not by my personal wish. And in contemporary computing who will use one machine with so much memory? If you want to have high performance you will split the operations over many nodes. And you will have the same performance plus high availability

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